<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        body{
            font-family: Verdana;font-size: 14px;margin: 10px }

        #container{
            margin: 0 auto;width: 100%;
        }
        #header{
            height: 50px;background: #99cc66; margin-bottom: 5px;

        }
        #middle{
            margin-bottom: 5px;
        }
        #leftmenu{
            float: left; width: 180px; background: red;
        }
        #content{
            background: blue;
        }
        #footer{
            height: 60px;background: #99cc66;
            clear: both;
        }

    </style>
</head>
<body>

</body>
</html>